Free College Essays.com - Free Essays, Term Papers and Book Reports.


		Search Lots of Essays

	Data Base
	• Home • Custom Term Papers • Free Essays • Free Term Papers • Free Research Papers • Free Book Reports • Plagiarism?
	Links
	• Search 101,000 Papers @ MegaEssays.com • Search 100,000 Papers @ DirectEssays.com • Search 95,000 Papers @ ExampleEssays.com
	Free Essays
	• ChuckIII's Free Essays • College Term Papers • Free Essays • Free College Essays • Learn Essays
	Contact Us
	• Contact Us

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ALL

You Have Viewed Too Many Free
Essays, Term Papers, and Book Reports.

Magnetic Levitation

Magnetic Levitation

In addition to rocket and air-breathing propulsion work involving combustion, NASA is beginning to test concepts such as magnetic levitation (MagLev) systems that could hurtle future reusable launch vehicles off their pads with ground-based electrical fields.
NASA MagLev testing is to enter a major new phase next spring. The use of a MagLev launch-assist track would reduce the vehicle size and propellant needed to place a payload in orbit. The work is underway at Marshall Space Flight Center and Lawrence Livermore National Laboratory.
By using a MagLev track to provide the initial 400-600 mph. of velocity at 2g of acceleration, engineers believe they could develop a winged space vehicle 20% smaller than one with a comparable payload using all self-contained propellant, said Sherry Buschmann, Marshall's project manager for Launch Technologies.
The advantage with MagLev is that propulsion for the initial acceleration off the runway is ground-based electricity that does not have to be carried by the flight vehicle.
Marshall engineers believe that a 1.5-mi. MagLev track could be used to accelerate a 120,000-150,000-lb. RLV about the size of an SR-71 using only $75 of electricity. The carriage for the flight vehicle would weigh 60,000 lb. and stay on the track at vehicle liftoff.
The savings

track, maglev, vehicle, marshall, test, using, space, propellant, off, initial, flight, electrical, carriage, underway, tests, smaller, size, runs, rocket, rlv, propulsion, payload, next, nasa, livermore, launch, ground-based, future, ft, force, engineers, electricity, concept, center, build, believe

Word Count: 399

Acceptance_Essays

American_History

Anatomy_&_Physiology

Animal_Science_&_Zoology

Anthropology

Architecture

Art

Astronomy

Aviation

Biographies

Book_Reports

Business

Computers

Creative_Writing

Current_Events

Economics

Education

Engineering

English

Environmental_Science

Ethics

European_History

Film_&_TV

Foreign_Languages

Geography

Government_&_Politics

Health_&_Beauty

History_Other

Human_Sexuality

Legal_Issues

Marketing

Mathematics

Medicine

Miscellaneous

Music

Mythology

Philosophy

Physics

Poetry

Political_Science

Psychology

Religion

Science

Shakespeare

Social_Issues

Sociology

Speech

Sports_&_Recreation

Supernatural

Technology

Theater

Theses_&_Dissertations

	Search
	• Search 101,00 papers @ Direct Essays